modify upload demo
modify upload demo

ecomfe/ub-ria-ui,yanghuabei/ub-ria-ui,yanghuabei/ub-ria-ui,3610cn/ub-ria-ui,DDDBear/ub-ria-ui,bobshen/ub-ria-ui,bobshen/ub-ria-ui,DDDBear/ub-ria-ui,ecomfe/ub-ria-ui,3610cn/ub-ria-ui